CN102575513A - Steam distribution and conditioning assembly for enhanced oil recovery of viscous oil - Google Patents
Steam distribution and conditioning assembly for enhanced oil recovery of viscous oil Download PDFInfo
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- CN102575513A CN102575513A CN2010800473880A CN201080047388A CN102575513A CN 102575513 A CN102575513 A CN 102575513A CN 2010800473880 A CN2010800473880 A CN 2010800473880A CN 201080047388 A CN201080047388 A CN 201080047388A CN 102575513 A CN102575513 A CN 102575513A
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- tubing string
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- inlet
- group spare
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Abstract
Methods and apparatus for enhanced and improved viscous oil recovery are disclosed. A horizontal well is drilled through the viscous oil formation. A specially designed tubing string includes outlets that deliver steam more uniformly into the entire horizontal extent of the well borehole. Heat from the steam mobilizes and lowers the viscosity of the heavy crude wherein the crude is then produced to the surface via conventional lift arrangements.
Description
The cross reference of related application
Present patent application requires to submit on October 22nd, 2009, sequence number is the rights and interests of 61/254,144 U.S. Provisional Application, above-mentioned application at this through all being incorporated herein by reference.
Technical field
The present invention relates to oilfield exploitation device and technology, relate in particular to the device and the technology that are used to exploit heavy oil or viscous crude.
Background technology
As everyone knows, through in mined bed, get out vertical shaft and then steam is injected mined bed and at reservoir exploitation viscous crude to increase mobility and to reduce the viscosity of viscous crude.This steam injects and carries out with some different modes.In a kind of technology, can use the process cycle property ground that is called as cyclic steam injection (CSS) to the well steam blowing in the reservoir.In this technology, steam injects mined bed downwards along vertical shaft.Allow steam in the reservoir, " to soak into " and continue short-term, therefore reduce its viscosity and increase its mobility with heating in crude oil.Let well continue exploitation then and continue relatively long period to extract the less crude oil of viscosity through heating.Typically, repeating this cycle becomes profitless up to exploitation.
The another kind of technology that is used for exploiting the viscous crude reservoir is to get out vertical shaft at mined bed with geometrical pattern (for example with or 9 dot patterns) at 5.In these geometrical patterns, well typically with symmetrical arrangement in the zone, reservoir, and be designated as based on its position in pattern and inject well or recovery well.Via injecting well steam is injected mined bed continuously, heat viscous crude and it is driven into the adjacent vertical recovery well in the geometric array attempting.
In the initial exploitation of the reservoir of viscous crude, these described method work are good.Yet As time goes on, steam is assembled in the top of mined bed easily.This possibly cause the heating of the viscous crude in the bottom of mined bed not enough certainly.The bottom that is full of heavy crude oil of mined bed is not exhausted, and reason is that the high viscosity of crude oil stops it to move to the well of recovery well.Therefore a large amount of potential minable crude oil of script can become not recyclable.
Well-known in the art, horizontal orientation well or horizontal well can be used to help from typically after to the vertical shaft steam in jection, there not being part (the especially above-mentioned bottom) exploitation of the mined bed of loss.Be desirably in these assemblies along the whole length of the horizontal segment of well the steam of uniform distribution is transported to mined bed.
Horizontal steam injects well and for the heavy oil steam flooding, is just becoming more and more useful and efficient, and is the solution of unique economy of some reservoirs of exploitation in many cases.The successful Application that horizontal steam injects need be along the controlled steam distribution of the whole length of horizontal segment.Many devices have been suggested as Method Of Accomplishment this controlled distribution are provided; Yet these devices are also tested and are had a serious limit.
Major limitation is that the equipment that is proposed can only provide the control (" 100% quality ") of the injection of single-phase steam at most.When extracting wet steam flow, water vapour and liquid a part of, the performance of such device runs into the effect that is separated.This phenomenon of phase separation with extract percentage of water steam from total water vapour and be different from from the fact of total liquid extraction percentage liquid relevant.For example, if main flow has 70 (70%) percent quality of steam, then extract stream and possibly have obviously higher or lower quality.
Many steam floodings are manipulated the two-phase steam of being made up of water vapour and liquid phase.Even for injecting single-phase operation, at the steam of 100% quality at well head place, the quality of steam that heat waste and water blockage also can change along horizontal segment under the face of land.In addition, if two phases are not separated in device pro rata, then mass distribution is heterogeneous, and can not obtain even latent heat (more crucial reservoir performance standard).
Most devices that propose extract steam through a series of holes and leave trunk line stream, and said hole can provide or not provide additional flow restriction mechanism before being transported to the reservoir.The basis of many these devices depends on the improvement inflow control device (" ICDs ") of on reverse flow direction, operating (" injection way ") with successful hope.Although test fully, such mechanism does not have the possibility of the steam of single-phase, 100% quality of distribution.Yet in the application that utilizes two-phase steam, the fluidised form influence distributes with the unknown that different phase velocities cause depending on the water vapour-separated form water in the device mutually.Best steam distribution and latent heat conveying need device to the mass range of a hundred per cent (100%), to control steam in jection reliably about 40 (40%) percent.
Summary of the invention
According to an aspect of the present invention, a kind of well group spare that is used for steam is injected underground reservoir is disclosed.Said well group spare comprises the tubing string that is communicated with the mined bed fluid of underground reservoir.The approximate horizontal section that said tubing string has roughly vertical section and extends from the bottom of said roughly vertical section.Said approximate horizontal paragraph qualification is at the heel of an end with at the toe of opposite end.The opening that is formed on the inner surface of said approximate horizontal section limits inlet.The opening that is formed on the external surface of said approximate horizontal section limits outlet.Passage extends between said inlet and said outlet, makes the steam that is received by said inlet be transported to said outlet.Flow adjustement device more is positioned in the said tubing string near said heel than said inlet in the axial direction, with the water vapour of generation two-phase steam and the more homogeneous mixture of liquid component.
In one or more embodiments, said flow adjustement device is a fixture.In one or more embodiments, said flow adjustement device is to limit the fixture that a plurality of axially spaced-aparts of control band are opened.In one or more embodiments, said flow adjustement device comprises a plurality of alar parts, and said a plurality of alar parts extend internally and around the circumference of said tubing string from the inner surface of said tubing string.
In one or more embodiments, said flow adjustement device can allow logging tool to pass wherein.
In one or more embodiments, said flow adjustement device is positioned at length in the said tubing string between about four to six times of the diameter of the said tubing string at the upper reaches of said inlet.
In one or more embodiments, said flow adjustement device is loaded in the said tubing string.In one or more embodiments, said flow adjustement device is positioned between the pipeline section in the said approximate horizontal section of said tubing string.
In one or more embodiments, said tubing string has the flow region that cross section reduces, and said inlet is formed in the flow region that said cross section reduces.For example, the flow region that said cross section reduces can have inside conical surfaces, and said inlet can be formed on the said inside conical surfaces at least in part.
In one or more embodiments, said inlet more is formed in the said tubing string near said heel than said outlet in the axial direction, makes that the axial momentum of steam is held when steam is received by said passage.For example, said passage can extend less than about 15 degree from said inner surface.
In one or more embodiments, the annular space that is communicated with said outlet fluid is formed in the external surface of said tubing string and extends around the circumference of said tubing string.Nozzle can be positioned in the said annular space flowing of the steam that receives from said outlet with control.
Another aspect of the present invention comprises a kind of well group spare that is used for steam is injected underground reservoir.Said well group spare comprises the tubing string that is communicated with the mined bed fluid of underground reservoir.The approximate horizontal section that said tubing string has roughly vertical section and extends from the bottom of said roughly vertical section.Said approximate horizontal paragraph qualification is at the heel of an end with at the toe of opposite end.The opening that is formed on the inner surface of said approximate horizontal section limits inlet.The opening that is formed on the external surface of said approximate horizontal section limits outlet.Passage extends between said inlet and said outlet makes the steam that is received by said inlet be transported to said outlet.Flow adjustement device than said inlet in the axial direction more near said heel be positioned in the said tubing string.Said flow adjustement device has a plurality of alar parts; Said a plurality of alar part extends internally and around the circumference of said tubing string from the inner surface of said tubing string; Make when steam is received by said a plurality of alar parts, generate the water vapour of steam and the more homogeneous mixture of liquid component.
In one or more embodiments, the said a plurality of alar parts that extend internally from the inner surface of said tubing string are axially spaced apart to limit control band.
In one or more embodiments, the said a plurality of alar parts that extend internally from the inner surface of said tubing string provide enough gaps to pass wherein to allow logging tool.
In one or more embodiments, said flow adjustement device is positioned at length in the said tubing string between about four to six times of the diameter of the said tubing string at the upper reaches of said inlet.
In one or more embodiments, said flow adjustement device is loaded in the said tubing string.In one or more embodiments, said flow adjustement device is positioned between the pipeline section in the said approximate horizontal section of said tubing string.
In one or more embodiments, said tubing string has flow region that cross section reduces and said inlet and is formed in the flow region that said cross section reduces.For example, the flow region that said cross section reduces can have inside conical surfaces, and said inlet can be formed on the said inside conical surfaces at least in part.
In one or more embodiments, said inlet more is formed in the said tubing string near said heel than said outlet in the axial direction, makes that the axial momentum of steam is held when steam is received by said passage.For example, said passage can extend less than about 15 degree from said inner surface.
In one or more embodiments, the annular space that is communicated with said outlet fluid is formed in the external surface of said tubing string and extends around the circumference of said tubing string.Nozzle can be positioned in the said annular space flowing of the steam that receives from said outlet with control.
Description of drawings
Fig. 1 is the schematic section that the prior art steam in the horizontal well in the oil-gas mining field is carried.
Fig. 2 is the schematic section that the prior art steam in the horizontal well in the oil-gas mining field is carried.
Fig. 3 is the schematic section that is used for the prior art tubing string allocation component in the horizontal well in oil-gas mining field.
Fig. 4 is the schematic section that is used for the allocation component of tubing string according to an embodiment of the invention in the horizontal well in oil-gas mining field.
Fig. 5 is the schematic section that is used for the allocation component of tubing string according to an embodiment of the invention in the horizontal well in oil-gas mining field.
Fig. 6 is the schematic section that is used for the allocation component of tubing string according to an embodiment of the invention in the horizontal well in oil-gas mining field.
Fig. 7 is the schematic section that is used for the allocation component of tubing string according to an embodiment of the invention in the horizontal well in oil-gas mining field.
Fig. 8 is the schematic section that is used for the allocation component of tubing string according to an embodiment of the invention in the horizontal well in oil-gas mining field.
Fig. 9 is the schematic section that is used for the flow conditioner according to an embodiment of the invention in the horizontal well in oil-gas mining field.
Figure 10 is the schematic section of flow conditioner that engages Fig. 9 of tubing string steam distribution assembly.
Figure 11 is used for the figure that the vapor phase of the conventional tubing string allocation component in the horizontal well in oil-gas mining field is separated.
Figure 12 is used for the figure that the vapor phase of the allocation component of tubing string according to an embodiment of the invention in the horizontal well in oil-gas mining field is separated.
The specific embodiment
Referring to Fig. 1 of prior art, cross-sectional view has shown the well 11 with vertical section 11A and horizontal segment 11B at first.Well 11 provides the flow path between well surface and exploitation sand or reservoir 31.Tubing string 13 also shows in Fig. 1 with slotted liner 15.The horizontal segment 11B of tubing string 13 comprises heel 13A and relative toe 13B.Slotted liner 15 is that lining is in the completion system of the horizontal segment 11B of well 11 and typically through the vertical section 11A isolation of lead sealing 17 with well 11.Flowing steam leaves from toe 13B via tubing string 13 supply and at end 19.Vapor stream is by arrow 21 indications.Flowing steam directly strikes in the location of Reference numeral 23 and can cause the erosion of bushing pipe 15 potentially on the slotted liner 15 and collapse, and this is imperfect situation.And use should technology, and the heat of steam accumulates in the zone 25 and 27 of reservoir 31 near toe 13B place rather than along the length of slotted liner 15.
With reference now to Fig. 2 of prior art,, well 29 has vertical section 29A that leads to the face of land and the horizontal segment 29B that penetrates the long horizontal segment of exploitation sand or reservoir 31.Slotted liner 37 linings are in the horizontal segment 29B of well 29.Tubing string 33 inserts from the face of land and is stopped up by stopper 35 in its lower end.The horizontal segment 29B of tubing string 33 comprises heel 33A and relative toe 33B.Before stopper 35, the length of tubing string 33 is provided with isolated boring 39 along its whole horizontal segment between heel 33A and toe 33B.Each boring 39 is coated with sacrifices bump bar 41.Sacrifice bump bar 41 by the carbon steel material structure and to be the band ceramic coating when needing.Sacrifice bump bar 41 and in each boring 39, be welded to skew tubing string 33.
Steam generation source (not shown) is arranged in place, the face of land and steam is input to tubing string 33.Steam is moved down into its following horizontal segment 29B along tubing string 33, and steam leaves via boring 39 at said horizontal segment down.As will describe, although steam can leave tubing string 33 between heel 33A and toe 33B, be unrealized and distribute and latent heat along the homogeneous quality of horizontal segment 29B.
With reference to figure 3, shown the cross section of a part of the tubing string 33 of the slotted liner 37 that is positioned at Fig. 2.Sacrificing bump bar 41 does not show in Fig. 3.Tubing string 33 comprises inner surface 43 and external surface 45.A plurality of borings 39 extend to external surface 45 from inner surface 43.Each boring 39 radially outward, be approximately perpendicular to inner surface 43 and extend.Typically, boring 39 between the heel 33A of tubing string 33 and toe 33B discontinuously at interval to be used to deliver a vapor to reservoir 31.Two phase fluid F (typically being the steam with vaporous water and liquid water droplets D) moves through tubing string 33 to be used for being input to oil-sand or reservoir 31.
When two phase fluid F in lower-speed state (for example less than 40 feet per seconds) following time, flow by layering.Especially, gravity causes liquid phase to move along the bottom of pipe.When surface water steam and liquid velocity all hanged down, the interface between liquid phase and the vapour phase was level and smooth.When water vapour speed begins to increase, the interface fluctuation that becomes.When surface liquid speed increased, liquidity preference was in the impact or the big wave (duration is short) that form by layering wave flow liquid separated.Under very high Surface runoff speed, liquid on the inner surface of tube wall, form the ring and water vapour the pipe central mobile.Under high surface water vapor (steam) velocity and quality of steam, liquid becomes and is entrained in the water vapour core (vapor core), makes pipe be full of the water vapour except the droplet of liquid mist.
Drop D has than higher density of vaporous water and therefore higher momentum, and this has limited the ability that drop D changes direction.When the drop D that in primary fluid stream F, moves ran into towards the littler water vapour stream of boring 39 or VELOCITY DISTRIBUTION, drop D received drag force to change direction.Yet the momentum of drop D is opposite with the variation of this direction, causes thus towards the less motion of boring 39.In the embodiment shown in fig. 3, be entrained in drop in the water vapour core and must flow F with respect to fluid and make unexpected and radially outer turning, so that drop gets into boring 39 to be used to be transported to reservoir 31.This steam that causes being extracted has less drop D, makes the quality of the steam carried at the upstream portion place of tubing string 33 be different from the steam of the downstream portion that is transported to tubing string 33.Especially, will carry towards the downstream toe 33B of tubing string 33 than the more drop of heel 33A.Such phenomenon is called as " being separated ".
In Fig. 4-8, provide to substitute duct arrangement to eliminate above-mentioned being separated, make the more uniform steam of quality be transported to reservoir 31 from two portions of upstream and downstream of corresponding tubing string.More particularly, Fig. 4-8 has all shown the part of heel and the union between the toe or the tubing string 111 of the horizontal segment that is arranged in well.As will describe, the steam that generates on the face of land be transported to pipeline 111 be used for along the horizontal segment of well with quality more uniformly steam distribution to the reservoir 31.
With reference to figure 4, pipeline 111 comprises a plurality of openings 117 that extend to external surface 115 from inner surface 113.Opening 117 comprises that being formed at inner surface 113 upper limits is incorporated into the opening of mouthful 117A, the passage 117C that is formed at the opening that limits mouthful 117B on the external surface 115 and between inlet 117A and outlet 117B, extends, and makes the steam that is received by inlet 117A be transported to outlet 117B.Inlet 117A more is formed in the tubing string near heel than outlet 117B in the axial direction.Become the outwards angle of about 15 degree although opening 117 is shown as to have with fluid stream F, the optimum angle that is to be understood that opening 117 is the smallest angles that machining tool allows.
A plurality of openings 117 preferably along the length of pipeline 111 discontinuously at interval.For example, opening 117 can along pipeline 111 per 100 to 500 feet position.Generally speaking, specific reservoir characteristic will be depended in the interval of opening 117.It will be appreciated by those of skill in the art that the isolation that can utilize between first group of opening 117 and the second group of opening 117.In addition, conventional sand controlling organization (for example sand net) can adjacent openings 117 be placed.In one embodiment, pipeline 111 ends near the heel, and opening 117 disposes in lining.
With reference to figure 5, provide to substitute duct arrangement with the separating of the water vapour among the eliminate fluid F and liquid, make the more uniform steam of quality be transported to reservoir 31 from the upstream and downstream portion of corresponding tubing string.As shown in Figure 5, pipeline 111 a plurality of openings 117 of comprising axle portion with flow region that cross section reduces or union 120 and extending to external surface 115 from inner surface 113.Opening 117 comprises that being formed at inner surface 113 upper limits is incorporated into the opening of mouthful 117A, the passage 117C that is formed at the opening that limits mouthful 117B on the external surface 115 and between inlet 117A and outlet 117B, extends, and makes the steam that is received by inlet 117A be transported to outlet 117B.Inlet 117A and outlet 117B are formed at the heel of tubing string and the roughly the same axial location between the toe.The same with the embodiment among Fig. 4, preferably along the length of pipeline 111 discontinuously at interval, each opening 117 is associated with union 120 a plurality of openings 117.
With reference to figure 6, shown alternative duct arrangement, wherein pipeline 111 comprises the opening 117 that extends to external surface 115 from inner surface 113 obliquely.Opening 117 comprises that being formed at inner surface 113 upper limits is incorporated into the opening of mouthful 117A, the passage 117C that is formed at the opening that limits mouthful 117B on the external surface 115 and between inlet 117A and outlet 117B, extends, and makes the steam that is received by inlet 117A be transported to outlet 117B.Inlet 117A more is formed in the tubing string near heel than outlet 117B in the axial direction.
In an embodiment, the diameter of the inner surface 113 of adjacent openings 117 reduces, and the thickness of pipeline 111 of next-door neighbour's upstream and downstream that makes opening 117 thus is than thicker among the embodiment shown in Figure 4.Be similar to Fig. 5; Union 120 comprises the conical surface 121 that extends internally; The said conical surface that extends internally extends between the part of the inner surface with normal diameter 113 of pipeline 111 and surface 123 that diameter reduces, and the surface that said diameter reduces is opening 117 residing positions.F is flowed with regulated fluid in the upper reaches that are positioned at opening 117 to inner conical surface 121.Be positioned at the downstream of opening 117 to outer cone surface 125, and extend to the part of inner surface 113 with normal diameter from the surface 123 that the diameter of pipeline 111 reduces.
Roughly the same among union 120 among Fig. 7 and Fig. 5 and 6, difference is that opening 117 is from axially extending through pipeline 111 to inner conical surface 121.Opening 117 comprises that being formed at inner surface 113 upper limits is incorporated into the opening of mouthful 117A, the passage 117C that is formed at the opening that limits mouthful 117B on the external surface 115 and between inlet 117A and outlet 117B, extends, and makes the steam that is received by inlet 117A be transported to outlet 117B.Inlet 117A more is formed in the tubing string near heel than outlet 117B in the axial direction.Preferably, opening 117 is as far as possible through the approaching axial fluid flow F that is parallel to of working ability.Opening 117 is positioned to allowing drop departing from before running into the surface 123 that diameter reduces under the minimum situation in the path of drop D on the inner conical surface 121 gets into outlet 117.For example, can become about 15 degree to form taper from the axis of pipeline 111 to inner conical surface 121, and inlet can be roughly parallel to the axis of pipeline 111.
As shown in Figure 7, opening 117 axially extends to the annular space 129 that the radial outside on the surface 123 that diameter reduces forms.Especially, annular space 129 is formed in the external surface 115 of tubing string and extends around the circumference of tubing string.Yet anchor ring 129 does not exist in certain embodiments, and opening 117 is axially extending between inner conical surface 121 and external surface 115.
Embodiment shown in Fig. 8 and Fig. 7 are roughly the same, and difference is that nozzle 131 is positioned in the annular space 129 to receive the fluid from opening 117.The size of nozzle 131 can be determined to be each opening 117 of controlling more accurately from along pipeline 111 and deliver a vapor to the speed the reservoir 31.The example of nozzle 131 comprises hole or the Venturi tube with the cross section that reduces.In addition, because the speed that the steam of nozzle 131 control are in this embodiment carried, so opening 117 can strengthen so that drop D is captured and is strengthened to scheduled volume.
It will be appreciated by those of ordinary skill in the art that the pipeline 111 that is used for each embodiment shown in Fig. 4-8 can be positioned at pipeline between rather than integrated union at tubing string self.The conveying of the type can prevent that vapor migration is in the water layer of below or in the unsaturated part in the top of reservoir.And the delivering vapor equably of the whole horizontal part through the mined bed that penetrates along the horizontal part by well, any possibly damage that the exploitation lining in this horizontal hole is caused is reduced.In addition, above embodiment has reduced therefore to carry uniform quality of steam, and guarantee that uniform latent heat is transported to the reservoir along being separated of the horizontal part of well.
With reference to figure 9, flow conditioner or adjusting joint 133 comprise the regulator shell 135 that is roughly tubulose.Conical butt extremity piece 137,139 is positioned at each end of shell 135, and opening 141 is formed at upper reaches extremity piece 137, and opening 143 is formed at downstream extremity piece 139.Extremity piece 137,139 is taper, makes opening 141,143 have the diameter littler than shell 135.
Be loaded in the shell 135 with shell 135 axially extending governor motions 145.Governor motion 145 comprises around the inner periphery of governor motion 145 at interval a plurality of alar part or fixtures 147 of extending internally discontinuously.Fixture 147 typically extends in the axial direction towards downstream, thereby and they are provided corresponding radially inwardly the enough gaps between the tip limit gap 148, the conventional logging downhole probe can use and regains through said gap.
Every group of circumferential isolated fixture limits governing stage 149.Preferably, governor motion 145 comprises that a plurality of isolated governing stage 149 along the length of governor motion 145 is to produce control band 151.Typically about ten (10) to 30 (30) inches control band is enough to obtain the homogeneous mixture of two phase fluid F.For example, the alar part 147 that extends internally can be made longer on shorter length, to obtain bigger combined amount.In addition, two phase fluid stream F can increase to obtain bigger combined amount.Because the adverse circumstances operating condition related with the steam distribution that is used for oil-gas mining, the parts of governor motion 145 are the hardening metal preferably.
With reference to Figure 10, regulate the upper reaches that joint 133 is arranged in steam distribution assembly 153.For example, flow adjustement device is arranged in about four to six times of diameter that the length in the tubing string can be the pipeline 111 at opening 117 upper reaches.Therefore, for 4.5 inches pipeline, regulate between about 18 to 27 inches of the upper reaches that joint 133 is arranged in opening 117.Yet the position of regulating joint 133 when needing can be more near or further from steam distribution assembly 153 location, for example be two to ten times of diameter of pipeline 111.Regulate the segmentation of opening 141,143 jointed pipes 111 of joint 133, for example the pipeline 111 of upper reaches steam distribution assembly 153.Allocation component 153 for example can be the allocation component described in Fig. 4-8 or another steam distribution assembly, the balanced steam distribution joint that for example can on market, buy from Baker Hughes (Equalizer Steam Distribution Sub).
Upstream end regulated fluid in next-door neighbour's allocation component 153 flows F or generates more representational sample or the extract that more uniform mixture will cause two phase fluid F.In annular fluidised form, through a plurality of governing stages 149, regulate the condensate that joint 133 assists in removing moisture film or collects from the inner surface of pipeline 111, and make its homogenising with the water vapour in the fluid F.The internal diameter that can increase shell 135 and governor motion 145 as required is so that the size of increase fixture 147 and quantity are to be used for more adjusting.
Example 1
Like what below will describe, use the horizontal steam in the face of land to inject performance and conventional tubing string allocation component that facility relatively uses flow conditioner or regulates the alternative duct arrangement of joint 133.Horizontal steam injects facility and can be under controlled condition tests diversified full-scale lower completion device, for example pipeline and bushing pipe flow control apparatus on the face of land.The additional detail that the horizontal steam in the face of land injects facility can find at the S.P.E paper #132410 of title for " Addressing Horizontal Steam Injection Completions Challenges with Chevron ' s Horizontal Steam Injection Test Facility ".
To three inlet pressures, two inlet steam quality, six inlet rates and two pressure extract the institute of ratios might measurement in a closed series from the quality of steam of each duct arrangement extraction.Below figure shown difference and the relation of pipe surface water vapour speed between quality of steam of extracting through the outlet of device and the quality of steam that in pipeline, flows.
Figure 11 has shown the quality of steam result who uses 4.5 inches pipelines to obtain, said pipeline have get out perpendicular to level and around four 1/4th inches holes that circumference is arranged at an angle of 90.This plumbing installation is similar to the plumbing installation shown in Fig. 3, and wherein drop must carry out that 90 degree are anxious to turn round to get into the hole to be used for being transported to the reservoir with respect to the fluid of drop stream.The scope of the quality of steam difference between the extraction of inlet and device has the cataclysm of-15 to+15 quality of steam units.
Figure 12 has shown the quality of steam result that the flow adjustement device that uses the upper reaches that are arranged in device, produce the result shown in Figure 11 obtains.Can see the improvement on whole velocity interval, more than 40ft/sec, have remarkable improvement, this is roughly corresponding to the transition speed from stratified flow to annular stream.Quality of steam difference concentrates on greater than around the zero value in this annular fluidised form, but shows obviously littler change and therefore more measurable.Four 1/4 of getting out perpendicular to level of quality of steam on whole velocity interval and the use shown in Figure 11 " quality of steam that obtains of hole compares the more intensive quality of steam difference band of generation.As discussed previously, flow adjustement device caused the mixing of drop and vaporous water before steam leaves via boring.
Although the present invention only is illustrated in its some of form, those skilled in the art should obviously this be not limited to this, but carries out various variations easily and do not depart from the scope of the present invention.For example, pipeline 111 can end near the heel, and feasible adjusting joint 133 is configured in bushing pipe with steam distribution assembly 153 and is spaced apart discontinuously.
Claims (19)
1. well group spare that is used for steam is injected underground reservoir, said well group spare comprises:
With the tubing string that the mined bed fluid of underground reservoir is communicated with, said tubing string has roughly vertical section and from the said roughly vertical bottom of the section approximate horizontal section of extending, and said approximate horizontal paragraph qualification has at the heel of an end with at the toe of opposite end;
Be formed on the inner surface of said approximate horizontal section and limit the opening of inlet;
Be formed on the external surface of said approximate horizontal section and limit the opening of outlet;
Passage, said passage extends between said inlet and said outlet, makes the steam that is received by said inlet be transported to said outlet; And
Flow adjustement device, said flow adjustement device than said inlet in the axial direction more near said heel be positioned in the said tubing string, with the water vapour that generates two-phase steam and the more homogeneous mixture of liquid component.
2. well group spare according to claim 1, wherein said flow adjustement device comprises fixture.
3. well group spare according to claim 1, wherein said flow adjustement device comprise the fixture that a plurality of axially spaced-aparts of limiting control band are opened.
4. well group spare according to claim 1, wherein said flow adjustement device comprises a plurality of alar parts, said a plurality of alar parts extend internally and around the circumference of said tubing string from the inner surface of said tubing string.
5. well group spare according to claim 1, wherein said flow adjustement device can allow logging tool to pass wherein.
6. well group spare according to claim 1, wherein said flow adjustement device are positioned at the predetermined length place at the upper reaches of said inlet in said tubing string, said predetermined length is between about four to six times of the diameter of said tubing string.
7. well group spare according to claim 1, wherein said flow adjustement device is loaded in the said tubing string.
8. well group spare according to claim 1, wherein said flow adjustement device are positioned between the pipeline section in the said approximate horizontal section of said tubing string.
9. well group spare according to claim 1, wherein:
Said tubing string also comprises the flow region that cross section reduces; And
Said inlet is formed in the flow region that said cross section reduces.
10. well group spare according to claim 1, wherein said inlet in the axial direction more near said heel, make that the axial momentum of steam is held when steam is received by said passage than said outlet.
11. well group spare according to claim 1 also comprises:
Be formed at the annular space in the external surface of said tubing string, said annular space extends around the circumference of said tubing string, and said annular space is communicated with said outlet fluid; And
Nozzle, said nozzle are positioned in the said annular space flowing of the steam that receives from said outlet with control.
12. a well group spare that is used for steam is injected underground reservoir, said well group spare comprises:
With the tubing string that the mined bed fluid of underground reservoir is communicated with, said tubing string has roughly vertical section and from the said roughly vertical bottom of the section approximate horizontal section of extending, and said approximate horizontal paragraph qualification is at the heel of an end with at the toe of opposite end;
Be formed on the inner surface of said approximate horizontal section and limit the opening of inlet;
Be formed on the external surface of said approximate horizontal section and limit the opening of outlet;
Passage, said passage extends between said inlet and said outlet, makes the steam that is received by said inlet be transported to said outlet; And
Flow adjustement device; Said flow adjustement device more is positioned in the said tubing string near said heel than said inlet in the axial direction; Said flow adjustement device has a plurality of alar parts; Said a plurality of alar part extends internally and around the circumference of said tubing string, makes when steam is received by said a plurality of alar parts the water vapour of generation steam and the more homogeneous mixture of liquid component from the inner surface of said tubing string.
13. well group spare according to claim 12 wherein extends internally and axially spaced apart said tubing string around said a plurality of alar parts of the circumference of said tubing string from the inner surface of said tubing string, limits control band thus.
14. well group spare according to claim 12, wherein said flow adjustement device are positioned at the predetermined length place at the upper reaches of said inlet in said tubing string, said predetermined length is between about four to six times of the diameter of said tubing string.
15. well group spare according to claim 12, wherein said flow adjustement device is loaded in the said tubing string.
16. well group spare according to claim 12, wherein said flow adjustement device are positioned between the interior pipeline section of the said approximate horizontal section of said tubing string.
17. well group spare according to claim 12, wherein:
Said tubing string also comprises the flow region that cross section reduces; And
Said inlet is formed in the flow region that said cross section reduces.
18. well group spare according to claim 12, wherein said inlet in the axial direction more near said heel, make that the axial momentum of steam is held when steam is received by said passage than said outlet.
19. well group spare according to claim 12 wherein provides enough gaps from said a plurality of alar parts that the inner surface of said tubing string extends internally, and passes wherein to allow logging tool.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25414409P | 2009-10-22 | 2009-10-22 | |
| US61/254,144 | 2009-10-22 | ||
| PCT/US2010/053420 WO2011050094A2 (en) | 2009-10-22 | 2010-10-20 | Steam distribution and conditioning assembly for enhanced oil recovery of viscous oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102575513A true CN102575513A (en) | 2012-07-11 |
Family
ID=43900941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800473880A Pending CN102575513A (en) | 2009-10-22 | 2010-10-20 | Steam distribution and conditioning assembly for enhanced oil recovery of viscous oil |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN102575513A (en) |
| BR (1) | BR112012009493A2 (en) |
| CA (1) | CA2777756A1 (en) |
| EA (1) | EA201270583A1 (en) |
| WO (1) | WO2011050094A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9896905B2 (en) * | 2014-10-10 | 2018-02-20 | Saudi Arabian Oil Company | Inflow control system for use in a wellbore |
| GB2564449B (en) * | 2017-07-11 | 2020-04-08 | Univ Cranfield | Injectable fluid control valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046199A (en) * | 1976-07-06 | 1977-09-06 | Union Oil Company Of California | Steam injection apparatus and method |
| US5709468A (en) * | 1992-11-27 | 1998-01-20 | Texaco Group, Inc. | Method for equalizing steam quality in pipe networks |
| US5826655A (en) * | 1996-04-25 | 1998-10-27 | Texaco Inc | Method for enhanced recovery of viscous oil deposits |
| US20090114393A1 (en) * | 2007-11-01 | 2009-05-07 | Schlumberger Technology Corporation | Diverter valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4062524A (en) * | 1973-06-06 | 1977-12-13 | Bayer Aktiengesellschaft | Apparatus for the static mixing of fluid streams |
-
2010
- 2010-10-20 WO PCT/US2010/053420 patent/WO2011050094A2/en active Application Filing
- 2010-10-20 BR BR112012009493A patent/BR112012009493A2/en not_active Application Discontinuation
- 2010-10-20 EA EA201270583A patent/EA201270583A1/en unknown
- 2010-10-20 CN CN2010800473880A patent/CN102575513A/en active Pending
- 2010-10-20 CA CA2777756A patent/CA2777756A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046199A (en) * | 1976-07-06 | 1977-09-06 | Union Oil Company Of California | Steam injection apparatus and method |
| US5709468A (en) * | 1992-11-27 | 1998-01-20 | Texaco Group, Inc. | Method for equalizing steam quality in pipe networks |
| US5826655A (en) * | 1996-04-25 | 1998-10-27 | Texaco Inc | Method for enhanced recovery of viscous oil deposits |
| US20090114393A1 (en) * | 2007-11-01 | 2009-05-07 | Schlumberger Technology Corporation | Diverter valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011050094A2 (en) | 2011-04-28 |
| BR112012009493A2 (en) | 2016-05-17 |
| WO2011050094A3 (en) | 2011-07-28 |
| CA2777756A1 (en) | 2011-04-28 |
| EA201270583A1 (en) | 2012-12-28 |
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Application publication date: 20120711 |